CW620N

Chemical composition (%) DIN EN 12167
Cu Zn Al Pb Fe Ni Sn Mn Others

min.

57

Rem.

0,05

0,8

–

–

–

–

–
max.

59

–

0,5

1,6

0,3

0,3

0,3

–

0,2

CuZn41Pb1Al This alloys is used for production of profiles by hot extrusion. Aluminium imparts a golden lustre, avoiding need for further polishing. The alloys with more than 1.6% Pb have very good machinability. s. It is a very good alloy for use in profiles which provide complex shapes or very thin walls, Handrails, Decorative Profiles, Standard Angles, Standard T sections, Standard Channels, Trim & Flooring Profiles and Ironmongery Profies.
Due to the alloying of Al CuZn43Pb1Al has a golden yellow colour. Common name is  Architectural “Bronze” also know as Architectural Brass
Generally supplied as extruded / as manufactured. 

Physical properties

At room temperature

Density

8,4 g/cm3

 

Shapping

Machinability 

Good

Cold working

Fair

Hot working

Very good

Hot working temperature

750-850ºC

 

Heat Treatment

Soft annealing 

425-550ºC

Stress relieving

250-350ºC

 

Connecting

Resistance welding  butt

Fair

Brazing

Fair

 

Surface treatment

Mechanical polishing

Very Good

Electrolytic polishing 

Poor

Galvanisation

Very Good

 

PRODUCTS

Alloys